@charset "utf-8";
$fontSize:100;
@function r($p) {
    @return $p/$fontSize*1rem;
}
//轮播图
#move_pic::before{
    content: "";
    display: block;
    padding-top: 51%;
    float: left;
}
#move_pic {
    overflow: hidden;
    position: relative;
    width: 77%;
    margin: 0 auto;
    margin-top: r(115);
    margin-bottom: r(80);
}
.movepic_nav {
    width: 100%;
    position: absolute;
    bottom: r(20);
    z-index: 1;
    >ul {
        width: 100px;
        margin: 0 auto;
        display: flex;
        justify-content: space-around;
        >li {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin: 0 4px;
            background: white;
            cursor: pointer;
        }
    }
}
.changecolor {
    background: #1f1f1f!important;
}
.banner_item {
    margin: 0 auto;
    width: 100%;
    opacity: 0;
    overflow: hidden;
    position: absolute;
    -webkit-animation-duration: 1s;
    animation-duration: 1s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
}
.banner_img img{
    width: 100%;
}
.banner_but{
    top: 70%;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        -webkit-transform: translate3d(-100%, 0, 0);
        transform: translate3d(-100%, 0, 0);
    }
    to {
        opacity: 1;
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

@keyframes fadeOutLeft {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        -webkit-transform: translate3d(-100%, 0, 0);
        transform: translate3d(-100%, 0, 0);
    }
}
@-webkit-keyframes fadeOutRight {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        -webkit-transform: translate3d(100%, 0, 0);
        transform: translate3d(100%, 0, 0);
    }
}

@keyframes fadeOutRight {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
        -webkit-transform: translate3d(100%, 0, 0);
        transform: translate3d(100%, 0, 0);
    }
}

@-webkit-keyframes fadeInRight {
    from {
        opacity: 0;
        -webkit-transform: translate3d(100%, 0, 0);
        transform: translate3d(100%, 0, 0);
    }
    to {
        opacity: 1;
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        -webkit-transform: translate3d(100%, 0, 0);
        transform: translate3d(100%, 0, 0);
    }
    to {
        opacity: 1;
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
    }
}
//关于
.big_tit{
    font-size: 50px;
    padding-bottom: r(57);
    text-align: center;
}
.about_cont{
    overflow: hidden;
    width: 64.8%;
    margin: 0 auto;
    position: relative;
}
.about_img{
    width: 100%;
    padding-top: 47.5%;
    cursor: pointer;
    img{
        width: 100%;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%,-50%);
    }
}
.product{
    width: 64.8%;
    margin: r(80) auto 0;
}
.product_cont{
    overflow: hidden;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap; 
}
.product_item{
    overflow: hidden;
}
.product_item_sml{
    width: 31.8%;
}
.product_item_lar{
    width: 64.8%;
}
.product_img_sml{
    width: 100%;
    position: relative;
    padding-top: 131%;
    overflow: hidden;
    cursor: pointer;
    img{
        height: 100%;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%,-50%);
        border: 0;
    }
}
.product_img_lar{
    width: 100%;
    position: relative;
    padding-top: 64.4%;
    cursor: pointer;
    overflow: hidden;
    img{
        height: 100%;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%,-50%);
        border: 0;
    }
}
.item_tit{
    text-align: center;
    p:nth-child(1){
        font-size: 16px;
        margin: 35px 0 15px;
    }
    p:nth-child(2){
        font-size: 24px;
        margin-bottom: 35px;
    }
}
.video{
    width: 53%;
    margin: r(159) auto 0;
}
.video_but{
    width: 200px;
    height: 40px;
    margin: 50px auto;
    border: 1px solid black;
    font-size: 14px;
    line-height: 40px;
    text-align: center;
    cursor: pointer;
}
.video_but:hover{
    background: #B9B9B9;
    border: 1px solid #B9B9B9;
    color: white;
}
@media only screen and (max-width: 768px){
    #move_pic {
        width: 95%;
        margin-top: r(215);
    }
    .big_tit{
        font-size: 26px;
    }
    .about_cont{
        width: 95%;
    }
    .product{
        width: 100%;
    }
    .item_tit{
        p:nth-child(1){
            font-size: 12px;
            margin: 15px 0 5px;
        }
        p:nth-child(2){
            font-size: 18px;
        }
    }
    .product_cont{
        justify-content: center;
    }
    .product_item_sml{
        width: 95%;
    }
    .product_item_lar{
        width: 95%;
    }
    .video{
        width: 85%;
    }
    .video_but{
        width: 200px;
        height: 30px;
        margin: 30px auto;
        font-size: 14px;
        line-height: 30px;
    }
}
